PEX 300x1300 Fine Jaw Crusher
When a quarry or mining plant already runs a primary crusher, the real bottleneck usually appears one stage later: the 100–250 mm product leaving a PE jaw crusher is still too coarse for a ball mill, a cone crusher or a commercial aggregate specification. That is the gap the PEX 300x1300 fine jaw crusher was built to close.
Baichy Heavy Industry manufactures mining crushing, ore grinding and mineral processing equipment, and the PEX-300×1300 is our dedicated secondary and fine crushing unit for rock and ore. This guide covers the full parameter table, how capacity behaves at each discharge setting, where the machine fits in a circuit, how to select it and how to keep it running.
What Is the PEX 300x1300 Fine Jaw Crusher?
The PEX 300x1300 fine jaw crusher belongs to the PEX (fine jaw crusher) family of single-toggle jaw crushers. The model number is the feed opening: 300 mm wide by 1300 mm long. That long, narrow "letterbox" inlet is the signature of fine crushing equipment — it caps feed at 250 mm while giving the chamber a long stroke path, so rock is compressed and re-compressed repeatedly before discharge.
Where It Sits in the Crushing Circuit
The PEX 300x1300 fine jaw crusher is a secondary crusher. Its normal duty is to take discharge from a PE-600×900 or PE-750×1060 primary jaw crusher, or grizzly-screened oversize, and reduce it to a controlled 20–90 mm product. From there material goes to a vibrating screen for closed-circuit sizing, to a cone or impact crusher for shaping, or straight into a ball mill as grinding feed.
PE Jaw Crusher
PE vs. PEX: Why the Difference Matters
Both series use the same curved-extrusion compression principle, but with different design targets:
• PE series — wide, deep chamber, large inlet, reduction ratio around 4:1 to 6:1, built for primary crushing of run-of-mine rock.
• PEX series — narrow, long chamber, smaller nip angle, reduction ratio up to 6:1 to 10:1, built for uniform fine output.
Pushing a PE machine into fine crushing duty yields flaky, oversized product and wasted energy, while feeding lumps over 250 mm into a PEX 300x1300 fine jaw crusher risks toggle plate damage and frame stress. Matching stage to machine is the cheapest way to protect your cost per ton.
PEX 300x1300 Fine Jaw Crusher Specifications
All capacity figures assume open-circuit operation with medium-hardness rock at 1.6 t/m³ bulk density. Actual output varies with hardness, feed gradation, moisture and feeding method.
| Parameter | PEX-300×1300 (Baichy standard) |
|---|---|
| Model | PEX-300×1300 fine jaw crusher |
| Feed opening (W × L) | 300 × 1300 mm |
| Max. feed size | ≤250 mm |
| Discharge opening (CSS) range | 20 – 90 mm |
| Capacity | 16 – 105 t/h |
| Eccentric shaft speed | 300 r/min |
| Motor power | 55 kW (6-pole); 75 kW option for hard abrasive ore |
| Max. feed compressive strength | ≤320 MPa |
| Adjustment method | Shim / wedge-type discharge adjustment |
| Jaw plate material | Mn18Cr2 high-manganese steel (Mn13Cr2 / Mn22Cr2 optional) |
| Dimensions (L × W × H) | ≈2720 × 1950 × 1600 mm |
| Total weight | ≈15.6 t |
| Application stage | Secondary / fine crushing |
How Capacity Moves with the Discharge Setting
Discharge setting is the fastest lever an operator has. Closing the CSS improves fineness but cuts throughput — the relationship is close to linear, which is why this model carries such a wide 16–105 t/h band.
| Closed side setting (CSS) | Approx. capacity (t/h) | Typical end use |
|---|---|---|
| 20 mm | 16 – 25 | Ball mill feed, sand-making pre-crush |
| 40 mm | 35 – 45 | Manufactured sand feed, concrete aggregate |
| 60 mm | 50 – 65 | Road base, railway ballast pre-sizing |
| 80 mm | 65 – 80 | General quarry aggregate |
| 90 mm | 85 – 105 | Coarse secondary product, cone crusher feed |
Working Principle: Why the Output Is Uniform
The PEX 300x1300 fine jaw crusher uses a single-toggle compound-pendulum mechanism. The motor drives V-belts and a forged eccentric shaft; the moving jaw hangs directly on the shaft, so each rotation produces an elliptical stroke — small at the top, large at the bottom.
On the upstroke the toggle angle widens and the moving jaw advances toward the fixed jaw, squeezing and grinding rock between two Mn18Cr2 jaw plates. On the downstroke the jaw retreats under the pull rod and spring and broken material drops out by gravity. Because the stroke is largest at the discharge end, material gets extra grinding action exactly where it is smallest — the reason this fine jaw crusher delivers a better-shaped, lower-flakiness product than a coarse jaw crusher at the same setting.
Key Advantages of the Baichy PEX 300x1300 Fine Jaw Crusher
• High reduction ratio in one pass. The deep, dead-zone-free chamber takes 250 mm feed down to 20–90 mm, removing the need for a separate tertiary stage in many limestone and dolomite plants.
• Built-in overload protection. The toggle plate is deliberately sacrificial: when tramp iron or an uncrushable boulder enters the chamber, it fails first, protecting the eccentric shaft, bearings and frame.
• Low energy cost per ton. A 55 kW motor plus a balanced flywheel that smooths torque peaks means the PEX 300x1300 fine jaw crusher uses less power per ton than an impact crusher of comparable duty on hard, abrasive rock — blow bars wear fast on granite and basalt, manganese jaw plates do not.
• Fast discharge adjustment. Shim-type or optional wedge adjustment lets operators change product specification during a short stoppage, ideal for plants switching between 0–20 mm, 0–31.5 mm and 0–40 mm products.
• Compact and easy to maintain. At about 2.7 × 2.0 × 1.6 m and 15.6 t, it fits existing layouts or a mobile chassis. Wear parts are limited to jaw plates, side liners and the toggle plate, all replaceable on site.
Applications: Rock, Ore and Industrial Minerals
The PEX 300x1300 fine jaw crusher processes any rock or ore up to 320 MPa compressive strength:
• Hard rock: granite, basalt, diabase, andesite, quartzite, river pebble
• Metallic ores: iron, copper, gold, manganese, lead-zinc, lithium pegmatite
• Industrial minerals: limestone, dolomite, gypsum, feldspar, phosphate rock, barite
• Recycling: demolition concrete, brick, tile, glass
In mineral processing, its most valuable role is preparing ball mill feed. Cutting mill feed from 250 mm to 20–40 mm with a PEX 300x1300 fine jaw crusher directly reduces grinding energy — "more crushing, less grinding" remains the most reliable cost lever in any concentrator.
How to Select the Right Fine Jaw Crusher
Confirm four things before ordering:
Feed top size — if lumps exceed 250 mm, add a grizzly ahead of the machine or use a PE primary unit.
Target product and capacity — choose the CSS that delivers the required size and verify the corresponding t/h covers peak, not average, demand.
Hardness and abrasiveness — abrasive ore justifies the 75 kW motor option and Mn22Cr2 jaw plates.
Circuit configuration — pair it with a vibrating feeder for even distribution and a vibrating screen for closed-circuit recirculation; uneven feeding costs more capacity than any machine parameter.
Maintenance Essentials
Feed evenly across the full 1300 mm width; side-loading causes uneven jaw plate wear. Rotate or swap jaw plates end-for-end before the tooth profile flattens. Monitor bearing temperature, keep lubrication clean, and inspect the toggle plate and tension spring after any overload. Never exceed 250 mm feed — most toggle failures trace back to oversized or tramp material.
Why Buy from Baichy Heavy Industry
Baichy Heavy Industry is a manufacturer dedicated to mining crushing, ore grinding and mineral processing equipment, with ISO 9001:2015 certified production and CE conformity for export markets. Our range covers jaw crushers, cone crushers, impact crushers, sand making machines, ball mills, grinding mills, mobile and crawler crushing plants and complete beneficiation lines — so the PEX 300x1300 fine jaw crusher is selected as part of a circuit, not sold as an isolated machine. Every order includes free flowsheet design and model selection, factory testing before shipment, installation guidance, operator training and long-term spare parts supply.
Customer site featuring the PEX series jaw crusher
FAQ About the PEX 300x1300 Fine Jaw Crusher
1. What is the capacity of the PEX 300x1300 fine jaw crusher?
16–105 t/h depending on CSS, rock hardness and feed gradation. At 20 mm CSS output is about 16–25 t/h; opened to 90 mm the same machine reaches roughly 85–105 t/h on medium-hardness rock.
2. What is the maximum feed size?
250 mm. The opening is 300 × 1300 mm, but the largest lump dimension must stay at or below 250 mm to avoid blockages and toggle plate damage.
3. Can it work as a primary crusher?
Only when raw material is already under 250 mm — screened quarry feed or recycled concrete, for example. For blasted run-of-mine rock, use a PE series primary jaw crusher first.
4. How is the discharge size adjusted?
By adding or removing shims in the adjustment seat, or by the wedge mechanism on upgraded configurations. The full range is 20–90 mm and adjustment takes a short planned stoppage.
5. What wear parts does it need?
Fixed and moving jaw plates, side liners (cheek plates) and the toggle plate. Life depends on ore abrasiveness and CSS — typically several months on limestone, shorter on quartz-rich ore. Baichy stocks Mn18Cr2, Mn13Cr2 and Mn22Cr2 plates for all PEX models.
Baichy Heavy Industry
Baichy Heavy Industry is a high-tech mining equipment company integrating R&D, manufacturing, sales, and after-sales service. Focusing on crushing, grinding, and mineral processing equipment, we provide professional solutions to our customers. We are ISO9001:2015 、certified, and our products include mobile crushing palnts, crawler crushing plant, construction waste crushing plants, jaw crushers, sand making machines, cone crushers, fine crushers, grinding mills, ball mills, etc., all with reliable performance to meet diverse project needs.
Baichy Heavy Industry – Your Trusted Partner
To ensure optimal performance of your equipment, Baichy Heavy Industry offers:
- Professional on-site installation guidance
- Comprehensive operator training
- 24/7 technical support & maintenance services
Our complete after-sales service system guarantees long-term, stable operation of your machinery with minimal downtime.
Protect Your Rights – Only Use Official Channels
To avoid scams and ensure authentic support, contact us exclusively through:
• Official Website: www.baichychina.com
• WhatsApp: +8615093222637
• Email: [email protected]
Your satisfaction is our priority – expect prompt, professional service every time.
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